Ordered the AP3 for my N55-based 2011 135i from Mike. Asked for fast delivery for slight bump up in shipping costs. I allways get fast responses and great service from Mike, even on week-ends. I totally recommend this seller.

Hooked up my AP3 to my laptop to make sure I had the latest firmware. Turns out I did not. Loaded Stage #1 agressive on my car (stock, with no bolt ons), as I have easy access to 94 Octane gasoline (Petro Canada). I took the car to the track, and the increase in torque and speed build up in any gear is crazy ...